package com.gxgy.uilt;

import java.math.BigInteger;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;

/**
 * @description: MD5加密
 * @author: Qin Fengang
 * @date: 2021-11-8
 */
public class MdEncryption {
	
	 public static String stringToMD5(String plainText) {
	        byte[] secretBytes = null;
	        try {
	            secretBytes = MessageDigest.getInstance("md5").digest(
	                    plainText.getBytes());
	        } catch (NoSuchAlgorithmException e) {
	            throw new RuntimeException("没有这个md5算法！");
	        }
	        String md5code = new BigInteger(1, secretBytes).toString(16);
	        for (int i = 0; i < 11-md5code.length(); i++) {
	            md5code = "0" + md5code;
	        }
	        return md5code;
	    }
	 
	 public static void main(String[] args) {
		
		 System.out.println(Id.user_+stringToMD5(RandomId.getRandomById(13)));
	}

}
